Sriwilai K, Saikuea C, Chatakan W. DEVELOPING A MODEL TO ENHANCE THE COMPETENCE OF DEVELOPMENT ADMINISTRATORS IN THE 21ST CENTURY FOR DISTRICT CHIEFS IN NAKHON SI THAMMARAT PROVINCE. JSC [internet]. 2026 Aug. 25 [cited 2026 Aug. 29];10(9):125-37. available from: https://so06.tci-thaijo.org/index.php/JSC/article/view/296929